Question

1. (a) What is spherical aberration in spherical mirrors? How can it be reduced? (b) What are parabolic mirrors? List two uses of parabolic mirrors. 2. State the principle of reversibility of light. Use this principle to show that the refractive index of medium 2 with respect to medium 1 is reciprocal of the refractive index of medium 1 with respect to medium 2.

Answer 1

Answer:it is explained below

Explanation: